Data

Shark depredation and behavioural interactions with fishing gear in a recreational fishery in Western Australia

Australian Institute of Marine Science
Australian Institute of Marine Science (AIMS) ; The University of Western Australia
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=http://geo.aims.gov.au/geonetwork/geonetwork/srv/eng/search?uuid=e4bc90f5-56bc-4e87-b721-03a1f3ee86d0&rft.title=Shark depredation and behavioural interactions with fishing gear in a recreational fishery in Western Australia&rft.identifier=http://geo.aims.gov.au/geonetwork/geonetwork/srv/eng/search?uuid=e4bc90f5-56bc-4e87-b721-03a1f3ee86d0&rft.publisher=Australian Institute of Marine Science (AIMS)&rft.description=Shark depredation, whereby a shark consumes an animal caught by fishing gear, can cause higher mortality for target species, injury to sharks and the loss of catch and fishing gear. A critical first step towards potential mitigation is understanding this behaviour and the shark species involved, because the identity of depredating shark species is unknown in many fisheries, and behavioural dynamics of shark interactions with fishing gear are not well understood. We used line-mounted video cameras in a recreational fishery in the Ningaloo region of Western Australia to: (1) identify shark species responsible for depredation, (2) investigate behavioural interactions with fishing gear, (3) identify the prevalence of retained fishing gear in sharks and (4) quantify the influence of environmental variables and fishing methods on shark abundance during demersal fishing at 92 locations. The study was led by UWA (Jon Mitchell - then PhD student) and performed in the Ningaloo region of Western Australia. We mounted high-definition video cameras on fishing lines to monitor shark depredation events and interactions with fishing gear. We recorded location, number of lines in the water, whether fishing vessels were fishing at anchor vs. drifting, fishing depth, gear and bait type The influence of fishing methods and environmental variables on the abundance of sharks at each location was investigated. All data were collected on an ipad using the software application 'Collector for ArcGIS'. Video was analysed using EventMeasure.Maintenance and Update Frequency: asNeededStatement: The paper builds on previous research documented in: Mitchell JD, McLean DL, Collin SP, Langlois TJ (2018) Shark depredation in commercial and recreational fisheries Reviews in Fish Biology and Fisheries. https://doi.org/10.1007/s11160-018-9528-z Mitchell JD, McLean DL, Collin SP, Taylor S, Jackson G, Fisher R, Langlois TJ (2018) Quantifying shark depredation in a recreational fishery in the Ningaloo Marine Park and Exmouth Gulf, Western Australia. Marine Ecology Progress Series. 587:141-157&rft.creator=Australian Institute of Marine Science (AIMS) &rft.creator=The University of Western Australia &rft.date=2024&rft.coverage=westlimit=112.79388427734376; southlimit=-23.87328034832418; eastlimit=113.95294189453126; northlimit=-21.619132728904592&rft.coverage=westlimit=112.79388427734376; southlimit=-23.87328034832418; eastlimit=113.95294189453126; northlimit=-21.619132728904592&rft_rights=All AIMS data, products and services are provided as is and AIMS does not warrant their fitness for a particular purpose or non-infringement. While AIMS has made every reasonable effort to ensure high quality of the data, products and services, to the extent permitted by law the data, products and services are provided without any warranties of any kind, either expressed or implied, including without limitation any implied warranties of title, merchantability, and fitness for a particular purpose or non-infringement. AIMS make no representation or warranty that the data, products and services are accurate, complete, reliable or current. To the extent permitted by law, AIMS exclude all liability to any person arising directly or indirectly from the use of the data, products and services.&rft_rights=The data was collected under contract between AIMS and another party(s). Specific agreements for access and use of the data shall be negotiated separately. Contact the AIMS Data Centre (adc@aims.gov.au) for further information&rft_subject=oceans&rft.type=dataset&rft.language=English Access the data
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All AIMS data, products and services are provided "as is" and AIMS does not warrant their fitness for a particular purpose or non-infringement. While AIMS has made every reasonable effort to ensure high quality of the data, products and services, to the extent permitted by law the data, products and services are provided without any warranties of any kind, either expressed or implied, including without limitation any implied warranties of title, merchantability, and fitness for a particular purpose or non-infringement. AIMS make no representation or warranty that the data, products and services are accurate, complete, reliable or current. To the extent permitted by law, AIMS exclude all liability to any person arising directly or indirectly from the use of the data, products and services.

The data was collected under contract between AIMS and another party(s). Specific agreements for access and use of the data shall be negotiated separately. Contact the AIMS Data Centre (adc@aims.gov.au) for further information

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Contact Information

tim.langlois@uwa.edu.au

Brief description

Shark depredation, whereby a shark consumes an animal caught by fishing gear, can cause higher mortality for target species, injury to sharks and the loss of catch and fishing gear. A critical first step towards potential mitigation is understanding this behaviour and the shark species involved, because the identity of depredating shark species is unknown in many fisheries, and behavioural dynamics of shark interactions with fishing gear are not well understood. We used line-mounted video cameras in a recreational fishery in the Ningaloo region of Western Australia to: (1) identify shark species responsible for depredation, (2) investigate behavioural interactions with fishing gear, (3) identify the prevalence of retained fishing gear in sharks and (4) quantify the influence of environmental variables and fishing methods on shark abundance during demersal fishing at 92 locations.


The study was led by UWA (Jon Mitchell - then PhD student) and performed in the Ningaloo region of Western Australia.



We mounted high-definition video cameras on fishing lines to monitor shark depredation events and interactions with fishing gear.

We recorded location, number of lines in the water, whether fishing vessels were fishing at anchor vs. drifting, fishing depth, gear and bait type



The influence of fishing methods and environmental variables on the abundance of sharks at each location was investigated. All data were collected on an ipad using the software application 'Collector for ArcGIS'.


Video was analysed using EventMeasure.

Lineage

Maintenance and Update Frequency: asNeeded
Statement: The paper builds on previous research documented in:



Mitchell JD, McLean DL, Collin SP, Langlois TJ (2018) Shark depredation in commercial and recreational fisheries Reviews in Fish Biology and Fisheries. https://doi.org/10.1007/s11160-018-9528-z

Mitchell JD, McLean DL, Collin SP, Taylor S, Jackson G, Fisher R, Langlois TJ (2018) Quantifying shark depredation in a recreational fishery in the Ningaloo Marine Park and Exmouth Gulf, Western Australia. Marine Ecology Progress Series. 587:141-157

Notes

Credit
McLean, D. Australian Institute of Marine Science (AIMS)
Credit
Mitchell JD. The University of Western Australia
Credit
Langlois TJ. The University of Western Australia
Credit
Collin SP. La Trobe University

Modified: 12 03 2024

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113.95294,-21.61913 113.95294,-23.87328 112.79388,-23.87328 112.79388,-21.61913 113.95294,-21.61913

113.37341308593,-22.746206538615

text: westlimit=112.79388427734376; southlimit=-23.87328034832418; eastlimit=113.95294189453126; northlimit=-21.619132728904592

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Other Information
Mitchell JD, McLean DL, Collin SP, Langlois TJ (2019) Shark depredation and behavioural interactions with fishing gear in a recreational fishery in Western Australia. Marine Ecology Progress Series 616: 107-122

local : 11068/15282

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  • global : e4bc90f5-56bc-4e87-b721-03a1f3ee86d0
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